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Meta-Analysis
. 2019 Feb 6;2(2):CD012703.
doi: 10.1002/14651858.CD012703.pub2.

Ureteral stent versus no ureteral stent for ureteroscopy in the management of renal and ureteral calculi

Maria Ordonez  1 , Eu Chang Hwang, Michael Borofsky, Caitlin J Bakker, Shreyas Gandhi, Philipp Dahm
Affiliations
Meta-Analysis

Ureteral stent versus no ureteral stent for ureteroscopy in the management of renal and ureteral calculi

Maria Ordonez et al. Cochrane Database Syst Rev. .

Abstract

Background: Ureteroscopy combined with laser stone fragmentation and basketing is a common approach for managing renal and ureteral stones. This procedure is associated with some degree of ureteral trauma. Ureteral trauma may lead to swelling, ureteral obstruction, and flank pain and may require subsequent interventions such as hospital admission or secondary ureteral stent placement. To prevent such issues, urologists often place temporary ureteral stents prophylactically, but the value of doing so remains unclear.

Objectives: To assess the effects of postoperative ureteral stent placement after uncomplicated ureteroscopy.

Search methods: We performed a comprehensive search using multiple databases (the Cochrane Library, MEDLINE, Embase, Scopus, Google Scholar, and Web of Science), trials registries, other sources of grey literature, and conference proceedings, up to 01 February 2019. We applied no restrictions on publication language or status.

Selection criteria: We included trials in which researchers randomised participants undergoing uncomplicated ureteroscopy to placement of a ureteral stent versus no ureteral stent.

Data collection and analysis: Two review authors independently classified studies and abstracted data from the included studies. We performed statistical analyses using a random-effects model. We rated the certainty of evidence (CoE) according to the GRADE approach.

Main results: Primary outcomesStenting may slightly reduce the number of unplanned return visits (16 trials with 1970 participants; very low CoE), but we are very uncertain of this finding.Pain on the day of surgery as measured on a visual analogue scale (scale 0 to 10; higher values reflect more pain) is probably similar (mean difference (MD) 0.32 higher, 95% confidence interval (CI) 0.13 lower to 0.78 higher; 4 trials with 346 participants; moderate CoE). Pain on postoperative days 1 to 3 may show little to no difference (standardised mean difference (SMD) 0.25 higher, 95% CI 0.32 lower to 0.82 higher; 8 trials with 683 participants; low CoE). On postoperative days 4 to 30, stented participants may experience more pain (8 trials with 903 participants; very low CoE), but we are very uncertain of this finding.Stenting may result in little to no difference in the need for secondary interventions (risk ratio (RR) 1.15, 95% CI 0.39 to 3.33; 10 studies with 1435 participants; low CoE); this corresponds to three more interventions per 1000 participants (95% CI 13 fewer to 48 more).Secondary outcomesStenting may reduce the need for narcotics (7 trials with 830 participants; very low CoE), but we are very uncertain of this finding.Rates of urinary tract infection (UTI) up to 90 days are probably not substantially different (RR 0.94, 95% CI 0.59 to 1.51; 10 trials with 1207 participants; moderate CoE); this corresponds to three fewer infections per 1000 participants (95% CI 23 fewer to 29 more).Ureteral stricture rates up to 90 days may be slightly reduced (14 trials with 1625 participants; very low CoE), but we are very uncertain of this finding.Rates of hospital admission may be slightly reduced (RR 0.70, 95% CI 0.32 to 1.55; 13 studies with 1647 participants; low CoE). This corresponds to 15 fewer admissions per 1000 participants (95% CI 33 fewer to 27 more).

Authors' conclusions: Findings of this review illustrate the trade-offs of risks and benefits faced by urologists and their patients when it comes to decision-making about stent placement after uncomplicated ureteroscopy for stone disease. We noted that both desirable and undesirable effects were small in absolute terms, with findings based mostly on low and very low CoE. The main issues reducing our confidence in research findings were study limitations (mostly risk of performance and detection bias) and imprecision. We were unable to conduct any of the preplanned subgroup analyses, in particular those based on stone size, stone location, and use of ureteral dilation, which may be important effect modifiers. Given the importance of this question, higher-quality and sufficiently large trials are needed to better inform decision-making.

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Conflict of interest statement

MO: none known.

ECH: none known.

MB: Boston Scientific (consultant for endourology and stone management), Auris Health (consultant for robotic surgery and endourology).

CB: none known.

SG: none known.

PD: serves as Co‐ordinating Editor of Cochrane Urology. However, he was not involved in editorial processing or decision‐making for this review. Other editors of Cochrane Urology managed the editorial process, including final sign‐off for this review.

Figures

1
1
Study flow diagram.
2
2
Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
3
3
Funnel plot of comparison: 1 URS with stent placement vs URS with no stent placement, outcome: 1.1 Unplanned return visit to emergency/urgent care department.
See this image and copyright information in PMC

Update of

  • doi: 10.1002/14651858.CD012703

References

References to studies included in this review

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References to studies excluded from this review

Ali 2001 {published data only}
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References to other published versions of this review

Ordonez 2017
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